speakers not working

[KevM3]

only the passenger door speaker works on my tqs its got the bog std concert radio ,any ideas before i start tearing it apart or rewiring speakers

[aragorn]

the rears are usually driven from a small amp in the boot.

[millsy]

i take it you've checked settings ie balance/fader on the headunit?

[Oranoco]

Pop the radio out and make sure all three multiplugs are connected. If the previous owner just slapped teh stock radio back in to sell it they may not have put all the plugs in. Likewise make sure the plus are on the speakers in the boot